- Physalopteriasis 127.7
- Physical therapy NEC V57.1
- Physiological cup, optic papilla
- Phytobezoar 938
- Pian (see also Yaws) 102.9
- Pianoma 102.1
- Piarhemia, piarrhemia (see also Hyperlipemia) 272.4
- Pica 307.52
- Pick's
- Pick-Herxheimer syndrome (diffuse idiopathic cutaneous atrophy) 701.8
- Pick-Niemann disease (lipid histiocytosis) 272.7
- Pickwickian syndrome (cardiopulmonary obesity) 278.03
- Piebaldism, classic 709.09
- Piedra 111.2
- Pierre Marie's syndrome (pulmonary hypertrophic osteoarthropathy) 731.2
- Pierre Marie-Bamberger syndrome (hypertrophic pulmonary osteoarthropathy) 731.2
- Pierre Mauriac's syndrome (diabetes-dwarfism-obesity) 258.1
- Pierre Robin deformity or syndrome (congenital) 756.0
- Pierson's disease or osteochondrosis 732.1
- Pigeon
- Pigmentation (abnormal) 709.00
- Piles - see Hemorrhoids
